Pumping-jack.



A. T. WOLFE.

PUMPING JACK.

APPLICATION FILED JUNE 10. 1914.

Patented Apr. 1l3, 1915.

ABRAHAM T. WOLFE, OF COFFEYVILLE, KANSAS.

PUMPING-JACK.

Specification of Letters Patent.

Patented Apr. 13, 1915.

Application filed June 10, 1914. Serial No. 844,311.

To all whom it may concern:

Be it known that I, ABRAHAM T. WOLFE, a citizen of the United States of America, residing at Coffeyville, in the county of Montgomery and State of Kansas, have invented certain new and useful Improvements in Pumping-Jacks, of which the following 1s a specification, reference being had therein to the accompanying drawing.

This invention relates to certain new and useful improvements in pumping jacks especially adapted to be used in connection with oil wells; the object being to provide a jack which is exceedingly simple and cheap in construction, the same being mounted upon a pair of leg supports which are held in their proper positions by tie rods having an adjustable connection therewith by means of which the jack can be adjusted in respect to the well; said leg supports being arranged in advance of the well casing and independent thereof.

Another object of my invention is to provide a jack which is formed of bars seated within sockets of castings and held therein by Babbitt metal in order to form an exceedingly tight joint so as to constitute a rigid jack.

Another object of the invention is to provide a novel clamp for securing the pump rod to the supporting stirrup.

Other and further objects and advantages of the invention will be hereinafter set forth and the novel features thereof defined by the appended claims.

In the drawingFigure 1, indicates a side elevation of my improved construction of pumping jack showing the same attached to a pump rod; Fig. 2, is a top plan'view of Fig. 1; Fig. 3, is a detail plan view of the pump rod clamp; and Fig. 4, is a detail section through a portion of one of the castings showing the manner of connecting the rods constituting the jack, thereto.

Like numerals of reference refer to like parts in the several figures of the drawings.

In the drawing, 1 and 2 indicate a pair of leg supports which are preferably formed tubular and are adapted to be arranged obliquely; the lower ends extending through the well curbing 3 adjacent the well casing 4. The upper ends of the leg supports 1 and 2 are arranged in tubular sockets 5 and 6 of castings 7 and 8, the casting 7 being provided with an integral stud shaft 9 which is adapted to extend through an opening formed in the casting 8 and be secured in position therein. by a nut 10, as clearly shown in dotted lines in Fig. 2.

The castings 7 and 8 are provided with integral hook members 11 and 12 to which are connected rods 13 and 14 carrying turn buckles 15 and 16 in which the upper ends of tie rods 17 and 18 are mounted in order to hold the leg supports in their proper position in respect to the well casing 4 to form a rigid support for the pumping jack which will be hereinafter fully described.

Mounted on the stud shaft 9 between the castings 7 and 8, is a jack 19 preferably triangular in shape formed of tubular bars 20, 21 and 22, the ends of which are seated in sockets formed in castings 23 24 and 25; the casting 23 being provided with a series of notches'26 forming an adjustable connection for the pull rod 27. The casting 24 is provided with an oil cup 28 having lubricating passages extending into the bearing formed therein through which the stud shaft 9 extends in order to lubricate the same.

The castings 23, 24 and 25 are substantially triangular in shape and the casting 24 is provided with a seat 29 in which is mounted a yoke stirrup 30 in the stirrup portions of which, are mounted the outwardly projecting studs 31 of a clamp 32 which is provided with an elongated opening 33 through which the pumping rod 34 extends. Slidably mounted within the clamp 32 is a clamping member 35 which is provided with an elongated opening 36 adapted to register with the opening 33 formed in the clamp and through which, the pumping rod 34 also extends.

The clamping member 35 is provided with an integral threaded bolt 37 which extends out through a bore formed in the end of the clamp 32 and on which is mounted a nut 38 for drawing the clamping member outwardly in order to securely clamp the pump rod therein, in adjusted position. It will be seen by this form of clamp, the pump rod can be easily and quickly connected to the jack and after once being secured in adjusted position, it will be securely held there without any danger of it working loose.

The tubular leg supports 1 and 2 and the bars 20, 21 and 22 constituting the frame of the jack, are formed with expanded ends, a description of one being sufficient for all. These ends extend into their respective sockets which are internally threaded or roughened as shown at 39, the diameter of the sockets being greater than the diameter of the members and into the annular chamber formed thereby, is poured Babbitt metal 40 Which securely locks the bars Within the sockets, as clearly shown in Fig. 4. By securing the sockets on the members in this manner, they can be readily removed by heating the same in order to melt the Babbitt metal, but When in use, a rigid connection is formed Which forms an exceedingly strong and durable joint;

In Fig. 1, I have shoWn in dotted lines, the manner of securing one of the bars in the socket,'but it is of course understood that all of the bars and leg supports are secured in a similar manner.

I claim; 7

l. A pumping jack, comprising a pair of spaced obliquely arranged legs, castings provided With sockets permanently mounted upon the upper ,ends of said legs, one of said castings being provided With an opening and the other casting With a stud extending into said opening and secured therein by a bolt Vfor spacing said castings apart, said castings having integral rearWardly projecting hook portions, tie rods connected to said hook portions, a jack frame pivotally mounted between said castings upon said castings being recessed to provide a seat for a stirrup, a series of downwardly inclined notches formed in another one of said castings forming an adjustable connection for a pull rod, the other casting being provided with a bearing.

In testimony whereof I hereunto aflix my signature in the presence of two witnesses. ABRAHAM T. WOLFE. WVitnesses JERRY L. HART, CLYDE FRAZIER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

" Washington, D. G. 

